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define math comp predicates as C functions

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This commit is contained in:
Yuichi Nishiwaki
2013-11-15 22:51:51 +09:00
parent e94aaffd34
commit c57f1bfbe1
2 changed files with 39 additions and 18 deletions
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src/number.c
+39
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@@ -79,6 +79,40 @@ pic_number_nan_p(pic_state *pic)
return pic_false_value();
}
#define DEFINE_MATH_PRED(op, name) \
static pic_value \
pic_number_##name(pic_state *pic) \
{ \
int argc, i; \
pic_value *argv; \
double f,g; \
\
pic_get_args(pic, "ff*", &f, &g, &argc, &argv); \
\
if (! (f op g)) \
return pic_false_value(); \
\
for (i = 0; i < argc; ++i) { \
if (pic_float_p(argv[i])) \
g = pic_float(argv[i]); \
else if (pic_int_p(argv[i])) \
g = pic_int(argv[i]); \
else \
pic_error(pic, #op ": number required"); \
\
if (! (f op g)) \
return pic_false_value(); \
} \
\
return pic_true_value(); \
}
DEFINE_MATH_PRED(=, eq)
DEFINE_MATH_PRED(<, lt)
DEFINE_MATH_PRED(>, gt)
DEFINE_MATH_PRED(<=, le)
DEFINE_MATH_PRED(>=, ge)
static pic_value
pic_number_abs(pic_state *pic)
{
@@ -399,6 +433,11 @@ pic_init_number(pic_state *pic)
pic_defun(pic, "nan?", pic_number_nan_p);
pic_gc_arena_restore(pic, ai);
pic_defun(pic, "=", pic_number_eq);
pic_defun(pic, "<", pic_number_lt);
pic_defun(pic, ">", pic_number_gt);
pic_defun(pic, "<=", pic_number_le);
pic_defun(pic, ">=", pic_number_ge);
pic_defun(pic, "abs", pic_number_abs);
pic_defun(pic, "floor-quotient", pic_number_floor_quotient);